static void ttfLoadCMAP2(FILE *fp,SubTablePtr subTable,ULONG offset)
{
USHORT * array,i,n = 0;
USHORT numGlyphId;
SubHeaderPtr header;
if (fseek(fp,offset,SEEK_SET) != 0)
ttfError("Fseek Failed in ttfLoadCMAP2 \n");
subTable->map.cmap2 = (CMAP2 *) calloc(1,sizeof(CMAP2));
array = subTable->map.cmap2->subHeaderKeys;
if (fread(array,sizeof(USHORT),256,fp) != 256)
ttfError("Error when getting subHeaderKeys \n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,256*sizeof(USHORT));
#endif
for (i=0;i<256;i++)
{
array[i] /= 8;
if (n< array[i])
n = array[i]; /* find the max of subHeaderKeys */
}
n += 1; /* the number of subHeaders is one plus the max of subHeaderKeys */
subTable->map.cmap2->subHeaders = header =
(SubHeaderPtr) calloc(n,sizeof(SubHeader));
for (i=0;i<n;i++)
{
(header+i)->firstCode = ttfGetUSHORT(fp);
(header+i)->entryCount = ttfGetUSHORT(fp);
(header+i)->idDelta = ttfGetSHORT(fp);
(header+i)->idRangeOffset = ttfGetUSHORT(fp);
/* it makes things easier to let the offset starts from
* the beginning of glyphIndexArray */
if ((header+i)->idRangeOffset != 0)
(header+i)->idRangeOffset -= (sizeof(USHORT) +
(n-i-1) * sizeof(SubHeader)) ;
}
/* caculate the length of glyphIndexArray, this is ugly, there should be
* a better way to get this information. */
numGlyphId =
subTable->length - (256 + 3) * sizeof(USHORT) - n * sizeof(SubHeader);
numGlyphId /= sizeof(USHORT);
subTable->map.cmap2->glyphIndexArray =
(USHORT *) calloc(numGlyphId,sizeof(USHORT));
for (i=0;i<numGlyphId;i++)
{
subTable->map.cmap2->glyphIndexArray[i] = ttfGetUSHORT(fp);
}
}
static void ttfLoadCMAP6(FILE *fp,SubTablePtr subTable,ULONG offset)
{
USHORT * array,len;
if (fseek(fp,offset,SEEK_SET) !=0)
ttfError("Fseek Failed in ttfLoadCMAP6 \n");
subTable->map.cmap6 = (CMAP6 *) calloc(1,sizeof(CMAP6));
subTable->map.cmap6->firstCode = ttfGetUSHORT(fp);
subTable->map.cmap6->entryCount = len = ttfGetUSHORT(fp);
subTable->map.cmap6->glyphIndexArray = array =
(USHORT *) calloc(subTable->map.cmap6->entryCount,sizeof(USHORT));
if (fread(array,sizeof(USHORT),len,fp) != len)
ttfError("Error when getting idRangeOffset\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,len*sizeof(USHORT));
#endif
}
static FT_Error
PCF_Glyph_Load( FT_GlyphSlot slot,
FT_Size size,
FT_UInt glyph_index,
FT_Int32 load_flags )
{
PCF_Face face = (PCF_Face)FT_SIZE_FACE( size );
FT_Stream stream = face->root.stream;
FT_Error error = PCF_Err_Ok;
FT_Bitmap* bitmap = &slot->bitmap;
PCF_Metric metric;
int bytes;
FT_UNUSED( load_flags );
FT_TRACE4(( "load_glyph %d ---", glyph_index ));
if ( !face )
{
error = PCF_Err_Invalid_Argument;
goto Exit;
}
if ( glyph_index > 0 )
glyph_index--;
metric = face->metrics + glyph_index;
bitmap->rows = metric->ascent + metric->descent;
bitmap->width = metric->rightSideBearing - metric->leftSideBearing;
bitmap->num_grays = 1;
bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
FT_TRACE6(( "BIT_ORDER %d ; BYTE_ORDER %d ; GLYPH_PAD %d\n",
PCF_BIT_ORDER( face->bitmapsFormat ),
PCF_BYTE_ORDER( face->bitmapsFormat ),
PCF_GLYPH_PAD( face->bitmapsFormat ) ));
switch ( PCF_GLYPH_PAD( face->bitmapsFormat ) )
{
case 1:
bitmap->pitch = ( bitmap->width + 7 ) >> 3;
break;
case 2:
bitmap->pitch = ( ( bitmap->width + 15 ) >> 4 ) << 1;
break;
case 4:
bitmap->pitch = ( ( bitmap->width + 31 ) >> 5 ) << 2;
break;
case 8:
bitmap->pitch = ( ( bitmap->width + 63 ) >> 6 ) << 3;
break;
default:
return PCF_Err_Invalid_File_Format;
}
/* XXX: to do: are there cases that need repadding the bitmap? */
bytes = bitmap->pitch * bitmap->rows;
error = ft_glyphslot_alloc_bitmap( slot, bytes );
if ( error )
goto Exit;
if ( FT_STREAM_SEEK( metric->bits ) ||
FT_STREAM_READ( bitmap->buffer, bytes ) )
goto Exit;
if ( PCF_BIT_ORDER( face->bitmapsFormat ) != MSBFirst )
BitOrderInvert( bitmap->buffer, bytes );
if ( ( PCF_BYTE_ORDER( face->bitmapsFormat ) !=
PCF_BIT_ORDER( face->bitmapsFormat ) ) )
{
switch ( PCF_SCAN_UNIT( face->bitmapsFormat ) )
{
case 1:
break;
case 2:
TwoByteSwap( bitmap->buffer, bytes );
break;
case 4:
FourByteSwap( bitmap->buffer, bytes );
break;
}
}
slot->bitmap_left = metric->leftSideBearing;
slot->bitmap_top = metric->ascent;
slot->metrics.horiAdvance = metric->characterWidth << 6;
slot->metrics.horiBearingX = metric->leftSideBearing << 6;
slot->metrics.horiBearingY = metric->ascent << 6;
slot->metrics.width = ( metric->rightSideBearing -
metric->leftSideBearing ) << 6;
slot->metrics.height = bitmap->rows << 6;
slot->linearHoriAdvance = (FT_Fixed)bitmap->width << 16;
slot->format = FT_GLYPH_FORMAT_BITMAP;
FT_TRACE4(( " --- ok\n" ));
Exit:
return error;
}
static void ttfLoadCMAP4(FILE *fp,SubTablePtr subTable,ULONG offset)
{
USHORT segCount;
USHORT * array,len;
if (fseek(fp,offset,SEEK_SET) !=0)
ttfError("Fseek Failed in ttfLoadCMAP4 \n");
subTable->map.cmap4 = (CMAP4 *) calloc(1,sizeof(CMAP4));
subTable->map.cmap4->segCountX2 = segCount = ttfGetUSHORT(fp);
subTable->map.cmap4->searchRange = ttfGetUSHORT(fp);
subTable->map.cmap4->entrySelector = ttfGetUSHORT(fp);
subTable->map.cmap4->rangeShift = ttfGetUSHORT(fp);
segCount /= 2;
subTable->map.cmap4->endCount = array =
(USHORT *) calloc(segCount,sizeof(USHORT));
if (fread(array,sizeof(USHORT),segCount,fp) != segCount)
ttfError("Error when getting endCount\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,segCount*sizeof(USHORT));
#endif
subTable->map.cmap4->reservedPad = ttfGetUSHORT(fp);
subTable->map.cmap4->startCount = array =
(USHORT *) calloc(segCount,sizeof(USHORT));
if (fread(array,sizeof(USHORT),segCount,fp) != segCount)
ttfError("Error when getting startCount\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,segCount*sizeof(USHORT));
#endif
subTable->map.cmap4->idDelta = array =
(USHORT *) calloc(segCount,sizeof(USHORT));
if (fread(array,sizeof(USHORT),segCount,fp) != segCount)
ttfError("Error when getting idDelta\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,segCount*sizeof(USHORT));
#endif
subTable->map.cmap4->idRangeOffset = array =
(USHORT *) calloc(segCount,sizeof(USHORT));
if (fread(array,sizeof(USHORT),segCount,fp) != segCount)
ttfError("Error when getting idRangeOffset\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,segCount*sizeof(USHORT));
#endif
/* caculate the length of glyphIndexArray, this is ugly, there should be
* a better way to get this information. */
len = subTable->length - 8*sizeof(USHORT) - 4*segCount*sizeof(USHORT);
len /= sizeof(USHORT);
subTable->map.cmap4->glyphIndexArray = array =
(USHORT *) calloc(len,sizeof(USHORT));
if (fread(array,sizeof(USHORT),len,fp) != len)
ttfError("Error when getting idRangeOffset\n");
#ifndef WORDS_BIGENDIAN
TwoByteSwap((unsigned char *) array,len*sizeof(USHORT));
#endif
}
